/Engine/Source/Runtime/Core/Public/HAL/ConsoleManager.h
Unregisters a console variable or command, if that object was registered. For console variables, this will actually only "deactivate" the variable so if it becomes registered again the state may persist (unless bKeepState is false).
virtual void UnregisterConsoleObject &40; const TCHAR &42; Name, bool bKeepState &41;